Police currently believe that an 18-year-old German-Iranian acted alone, killing nine people and then himself. They have not yet identified a motive; the man had no criminal record. Munich spent hours under lockdown.

Gunmen killed two policemen in Kazakhstan's financial capital Almaty on Monday, security sources and the Interior Ministry told Reuters, as the authorities said they had launched an anti-terrorist operation.

Three police officers were shot to death and several others wounded in Baton Rouge, Louisiana on Sunday, the city's mayor said, as the country remained on edge in the wake of police shootings of black men and the killings of five Dallas officers.

A "terrorist" gunman killed 80 people and wounded scores when he drove a heavy truck at high speed into a crowd that had watched Bastille Day fireworks in the French Riviera city of Nice late on Thursday, officials said.